<span class="token keyword">const</span> <span class="token function-variable function">Button</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=></span>
    <span class="token punctuation">(</span>
      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>button</span><span class="token punctuation">></span></span><span class="token plain-text">sup</span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>button</span><span class="token punctuation">></span></span> <span class="token punctuation">{</span><span class="token comment">/* highlight-line */</span><span class="token punctuation">}</span>
    <span class="token punctuation">)</span>